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 Post subject: Colored Holograms and Bodies in GL
PostPosted: Sun Aug 07, 2005 5:06 pm 
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Joined: Sun Mar 09, 2003 10:47 pm
Posts: 1612
Location: Ohio
I had never seen colored dead bodies in GL Quake before but some various FrogBot mods do it.

Source code of one Frogbot mod with colored bodies in GL:

http://www.parboil.quakeworld.ru/parboil/src101.zip

I noticed that the Quakeworld server, qw.shmack.net, has colored holograms.


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PostPosted: Tue Sep 20, 2005 8:11 am 
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Joined: Sun Mar 09, 2003 10:47 pm
Posts: 1612
Location: Ohio
http://www.inside3d.com/qip/q1/qcwa.htm#gl_skins

Quote:
Workaround for GLQuake "Invalid skin #<number>" message and dead bodies colors by Robert Field
This workaround should work with any existing mod, it was originally for the Frogbot mod.
It was put in a form that can be easily interfaced to other mods.
But this workaround is not a final solution, for the following reasons:

* You have to set "maxplayers" to the number of players plus 4 to see colored bodies
* If you change your colors during gameplay, your corpses will not change
* The "Invalid skin #<number> workaround will only work if the clients have a "player.mdl" file with the skin number in the player model (eyes and head models are used with skin 0). When players get the eyes or use a player.mdl which don't have heads (besides skin 0), then the invalid skin error is now avoided.
* Unfortunately, the shirt color is not accessable from QuakeC, though if shirt colors are set by your mod code then it is easy to change WriteByte(MSG_ALL, (ent.team - 1) * 17); in "skinfix.qc" to WriteByte(MSG_ALL, (ent.shirt * 16 + ent.team - 1)); to set proper shirt colors.

Code:
First create a new file called "SkinFix.qc" which will contain some new and replacement functions for "InitBodyQue()" and "CopyToBodyQue()" in "World.qc".

"SkinFix.qc"

/*
These functions give dead bodies color and avoid the "Invalid skin" message under GLQuake (currently v0.97)

The first maxplayers entities (ie. the entities besides world that exist at
the start of worldspawn) are used by clients when they connect.
The client entities are the only ones that have colors for player models in
GLQuake. Spare client entities can be used for dead bodies.
The approach of this workaround is to use client entities for player models where
possible and use normal entities for head gibs and eyes.
Hence head gibs and eyes always have skin 0, thus avoiding the invalid player
skin # error.
If there is not 4 spare client entities then some bodies use normal entities
and hence don't have color in GLQuake.
*/
// 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field
//            file added

/*
============
PostThink

Displays alternative entities for players or bodies if necessary each frame.
(the actual player or body entity in these cases are not rendered)
P.S.: don't mix up with PlayerPostThink() in client.qc
============
*/
void() PostThink =
{
   self.nextthink = 0.001;   // call PostThink every frame

   // loop through players linked list and display their eye or head gib model if necessary
   self = find(world, classname_, "player");
   while (self)
   {
      if (self.display_ent.modelindex)
      {
         // self.display_ent is a non-client entity
         setorigin(self.display_ent, self.origin);
         self.display_ent.angles = self.angles;
         self.display_ent.effects = self.effects;
      }
      self = find(self, classname_, "player");
   }

   // loop through bodies linked list and display their player model if necessary
   self = first_bodyque;
   while (self)
   {
      // self.display_ent is a spare client entity or world
      // self.display_ent.modelindex == 0 if a non-player model is being used, and self.display_ent is a spare client
      // self.display_ent.modelindex == 1 if self.display_ent == world
      if (self.display_ent.modelindex > 1)
         setorigin(self.display_ent, self.origin);
      self = self.owner;
   }
};

/*
============
FindClientBodyQue

Assigns a spare client entity to bodyque_entry.
If none spare then assign world.
Start search for client entity at bodyque_client.
============
*/
void(entity bodyque_entry) FindClientBodyQue =
{
   // post_think is the first entity after the client entities
   while (bodyque_client != post_think)
   {
      // check if bodyque_client is currently used by a client or body
      if (bodyque_client.classname_ != "player" && bodyque_client.classname_ != "body")
      {
         // bodyque_client is spare
         bodyque_entry.display_ent = bodyque_client;
         bodyque_client.classname_ = "body";
         bodyque_client.score_pos = score_pos_;
         return;
      }
      // get next bodyque_client and increment its index
      score_pos_ = score_pos_ + 1;
      bodyque_client = nextent(bodyque_client);
   }

   bodyque_entry.display_ent = world;   // no spare client entities
};

/*
============
AssignBodies

Assigns spare client entities to the 4 body entities.
If none spare then assign world.
This function is called whenever there is a change in the connected client entities list.
============
*/
void() AssignBodies =
{
   local entity bodyque_entry;

   // get first bodyque_client (with index 0)
   score_pos_ = 0;
   bodyque_client = nextent(world);

   // loop through bodies linked list and assign client entities if possible
   bodyque_entry = first_bodyque;
   while (bodyque_entry)
   {
      if (bodyque_entry.classname_ != "body")
         FindClientBodyQue(bodyque_entry);
      bodyque_entry = bodyque_entry.owner;
   }
};

/*
============
InitBodyQue

The bodies form a linked list (in the original id code they form a ring).
Called at the start of worldspawn so that post_think is the first entity after the client entities.
============
*/
void() InitBodyQue =
{
   post_think = spawn();
   post_think.nextthink = 0.001;
   post_think.think = PostThink;

   bodyque_head = first_bodyque = spawn();
   bodyque_head.owner = spawn();
   bodyque_head.owner.owner = spawn();
   bodyque_head.owner.owner.owner = spawn();
};

/*
============
CopyToBodyQue

Called whenever the original id CopyToBodyQue was called.
============
*/
void(entity ent) CopyToBodyQue =
{
   local entity bodyque_entry;   // the entity that renders the body

   if (ent.modelindex)
   {
      // ent is using the player model
      if (bodyque_head.display_ent)
      {
         // bodyque_head is using a spare client entity (ie. bodyque_entry)
         bodyque_entry = bodyque_head.display_ent;
         bodyque_head.modelindex = 0;   // don't render bodyque_head

         // set body colors for GLQuake (ignored by normal Quake since it takes notice of .colormap below)
         WriteByte(MSG_ALL, MSG_UPDATECOLORS);
         WriteByte(MSG_ALL, bodyque_entry.score_pos);   // the index of the client entity bodyque_entry
         WriteByte(MSG_ALL, (ent.team - 1) * 17);   // GLQuake color (ent.team - 1)
         // if ent has a shirt color ent.shirt then replace this last line by
         // WriteByte(MSG_ALL, ent.shirt * 16 + (ent.team - 1));
         setorigin (bodyque_entry, ent.origin);   // just in case PostThink has already been called this frame
      }
      else
      {
         // bodyque_head doesn't have a client entity so use itself (its color won't work in GLQuake though)
         bodyque_entry = bodyque_head;
      }

      bodyque_entry.skin = ent.skin;
      bodyque_entry.modelindex = ent.modelindex;
   }
   else
   {
      // ent is not using the player model
      if (bodyque_head.display_ent)
         bodyque_head.display_ent.modelindex = 0;
      // don't render the client entity bodyque_head.display_ent
      bodyque_entry = bodyque_head;
      bodyque_entry.skin = 0;
      bodyque_entry.modelindex = ent.display_ent.modelindex;
   }

   // set bodyque_entry.model to != ""
   bodyque_entry.model = "/";
   // set body colors for normal Quake (ignored by GLQuake)
   bodyque_entry.colormap = ent.colormap;
   // copy info display info of ent
   bodyque_entry.angles = ent.angles;
   bodyque_entry.frame = ent.frame;

   // copy physics info of ent
   bodyque_head.velocity = ent.velocity;
   bodyque_head.flags = 0;
   setorigin (bodyque_head, ent.origin);
   setsize (bodyque_head, ent.mins, ent.maxs);
   bodyque_head.movetype = MOVETYPE_TOSS;

   // move along bodyque_head (note: using a linked list not a ring)
   bodyque_head = bodyque_head.owner;
   if (!bodyque_head)
      bodyque_head = first_bodyque;
};

/*
============
SkinFixConnect

Called when client connects.
Assigns client an entity which is used for its head gib or eye model.
============
*/
void(entity client) SkinFixConnect =
{
   client.classname_ = "player";
   client.display_ent = spawn();
   // set client.display_ent to != ""
   client.display_ent.model = "/";
};

/*
============
SkinFixDisConnect

Called when client disconnects.
Does garbage collection for client.display_ent.
============
*/
void(entity client) SkinFixDisConnect =
{
   // since removing client.display_ent need to copy it if it is being rendered
   if (client.display_ent.modelindex)
      CopyToBodyQue(client);

   // must garbage collect client.display_ent since a new client will have client.display_ent == world
   remove(client.display_ent);
};

/*
============
Set_modelindex_0

Called when client is not being rendered (eg. intermission or observer mode)
============
*/
void(entity client) Set_modelindex_0 =
{
   client.display_ent.modelindex = 0;
};

/*
============
Set_modelindex_player

Called after client has been given a player model.
(client.modelindex must have been set)
============
*/
void(entity client) Set_modelindex_player =
{
   if (client.display_ent.modelindex)
   {
      // client.display_ent was being rendered
      client.display_ent.modelindex = 0;   // don't render client.display_ent

      // switch to client viewport
      msg_entity = client;
      WriteByte(MSG_ONE, SVC_SETVIEWPORT);
      WriteEntity(MSG_ONE, client);
   }
};

/*
============
Set_modelindex_non_player

Called after client has been given a non-player model.
(client.modelindex must have been set)
============
*/
void(entity client) Set_modelindex_non_player =
{
   if (client.display_ent.modelindex != client.modelindex)
   {
      // client.modelindex is the desired non-player model which client.display_ent will be rendering
      client.display_ent.modelindex = client.modelindex;   // render client.display_ent

      // switch to client.display_ent viewport
      msg_entity = client;
      WriteByte(MSG_ONE, SVC_SETVIEWPORT);
      WriteEntity(MSG_ONE, client.display_ent);
   }
   client.modelindex = 0;   // don't render client
};

Now you have to inform the compiler about the new file by putting the following line after "Defs.qc" in "Progs.src".

"Progs.src"

skinfix.qc      // 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field

Some new variables will be needed to be defined in "Defs.qc".

"Defs.src"

// 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field  start
//
// skinfix.qc
//

// protocol bytes
float SVC_SETVIEWPORT = 5;
float MSG_UPDATECOLORS = 17;

entity post_think;   // used to call PostThink every frame (after player physics),
         // and is the first entity after the client entities
entity bodyque_head;   // the next bodyque entity to be used
entity first_bodyque;   // the start of the bodyque linked list
entity bodyque_client;   // used to find a spare client entity to be used as a body
float score_pos_;   // the entity index of bodyque_client

.entity display_ent;   // the alternative display entity of a client or body
.float score_pos;   // the entity index
.string classname_;    // used to avoid conflict with .classname, but not strictly necessary
// 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field  end

After this you have to add the new functionality to the code:

    * Whenever a player entity is made blank include a call to "Set_modelindex_0()" after it
    * Whenever a player entity is set to a player model include a call to "Set_modelindex_player()" after it
    * Whenever a player entity is set to a non-player model include a call to "Set_modelindex_non_player()" after it
    * At the end of "ClientConnect()" in "Client.qc" include "SkinFixConnect(self);" and "AssignBodies();"
    * At the end of "ClientDisconnect()" in "Client.qc" include "SkinFixDisConnect(self);"
    * Comment out "InitBodyQue()" and "CopyToBodyQue()" in "World.qc"

"Client.qc"

void() execute_changelevel =
{
...
   while (other != world)
   {
      ...
      other.modelindex = 0;
      Set_modelindex_0(other);   // 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field
      setorigin (other, pos.origin);
      other = find (other, classname, "player");
   }

   WriteByte (MSG_ALL, SVC_INTERMISSION);
};
...
void() ClientKill =
{
...
   self.modelindex = modelindex_player;
   Set_modelindex_player(self);   // 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field
...
};
...
void() CheckPowerups =
{
...
// invisibility
   if (self.invisible_finished)
   {
      ...
      // use the eyes
      self.frame = 0;
      self.modelindex = modelindex_eyes;
      Set_modelindex_non_player(self);   // 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field
   }
   else
   {   // 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field
      self.modelindex = modelindex_player;   // don't use eyes
// 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field  start
      Set_modelindex_player(self);
   }
// 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field  end

// invincibility
...
};
...
void() ClientConnect =
{
...
// 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field  start
   SkinFixConnect(self);
   AssignBodies();
// 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field  end
};
...
void() ClientDisconnect =
{
...
   SkinFixDisConnect(self);   // 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field
};

"Player.qc"

void(string gibname, float dm) ThrowHead =
{
   setmodel (self, gibname);

// 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field  start
   if (self.classname == "player")
      Set_modelindex_non_player(self);
// 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field  end
...
};
...
void() PlayerDie =
{
...
   self.modelindex = modelindex_player;   // don't use eyes
   Set_modelindex_player(self);      // 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field
...
};

"World.qc"

// 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field  start
/*
void() InitBodyQue =
{
...
};

// make a body que entry for the given ent so the ent can be
// respawned elsewhere
void(entity ent) CopyToBodyQue =
{
...
};
*/
// 1998-06-21 Invalid skin and GLQuake body color workaround by Robert Field  end


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